CN203685106U - Hydraulic control protector - Google Patents
Hydraulic control protector Download PDFInfo
- Publication number
- CN203685106U CN203685106U CN201420015636.9U CN201420015636U CN203685106U CN 203685106 U CN203685106 U CN 203685106U CN 201420015636 U CN201420015636 U CN 201420015636U CN 203685106 U CN203685106 U CN 203685106U
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- CN
- China
- Prior art keywords
- hydraulic control
- overcoat
- annular space
- piston
- central tube
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a hydraulic control protector which comprises an upper joint, a lower joint, a central pipe and an outer sleeve. The outer sleeve is arranged on the outer side of the central pipe in a sleeved mode, an annular hydraulic control channel is formed between the outer sleeve and the central pipe, a protection device is arranged in the hydraulic control channel and seals and blocks the hydraulic control channel in a constant pressure mode, and axial overflowing through holes communicated to the hydraulic control channel are formed in the upper joint and the lower joint respectively. The protection device comprises a piston and an annular sleeve, the piston is fixed to the upper end of the annular sleeve through a shear pin, the piston and the central pipe are sealed through a sealing part, the piston and the annular sleeve are sealed through a sealing part, and the annular sleeve and the outer sleeve are sealed through a sealing part. According to the hydraulic control protector, the situation that hydraulic pressure of a hydraulic control pipeline is applied to a packer, and the packer is sealed or damaged in the process is effectively prevented, the dual-seal structure is adopted, sealing reliability is high, and the sealing effect is good can be kept for a long time.
Description
Technical field
The utility model relates to oil exploitation underground work process pipe string kit, especially a kind of hydraulic control protector.
Background technology
The hydraulic control note polymerizing technology tubing string of oil exploitation, mainly formed by kits such as liquid controling pipe line, hydraulic control packers, it is the key technology of the poly-oil production technology of oilfield exploitation hydraulic control note, but there is following shortcoming or deficiency: 1. because liquid controling pipe line is full of hydraulic oil in advance, because unobstructed hydraulic oil applies the kit of hydraulic pressure to packer, therefore this hydraulic pressure is added on packer in the process of going into the well, make packer automatic expansion, set midway, cause under tubing string not in place, operation failure, increases operation procedure, improves operating cost; Even if 2. packer does not set, also can cause with the friction of the borehole wall and damage, gently reduce application life, heavy set failure, operation failure, incurs loss through delay the duration, causes the waste of human, financial, and material resources, and economy suffers a loss.
Summary of the invention
The purpose of this utility model is to provide hydraulic control protector, adopts piston and double sealing structure, effectively overcomes or avoids the shortcoming or the deficiency that in above-mentioned prior art, exist.
In order to reach above-mentioned purpose, the utility model has adopted following technical scheme, hydraulic control protector, comprise top connection, lower contact, central tube, the upper and lower two ends of described central tube connect respectively top connection and lower contact, also comprise overcoat, described overcoat is enclosed within central tube outside, and outer putting, lower end is connected to, in lower contact, between described overcoat and central tube, form annular space hydraulic control passage, in described hydraulic control passage, protective device is set, described protective device constant-pressure type blocks hydraulic control passage, on described, in lower contact, offer respectively the axis that is communicated to hydraulic control passage and cross opening.
Described protective device comprises piston and annular space cover, and described piston is fixed on annular space set upper side by shear pin, and piston forms sealing by seal and central tube, and piston forms sealing by seal and annular space cover, and annular space cover forms sealing by seal and overcoat.
Described annular space cover middle wall is provided with the flowing hole that the annular space between central tube and overcoat is connected.
Described lower contact below union tail, tail pipe is connected to lower contact inner side by engage thread.
Between described overcoat and top connection, adopt seal sealing, between described overcoat and lower contact, adopt seal sealing.
Compared to prior art, the utlity model has following beneficial effect:
1, the hydraulic pressure that effectively prevents liquid controling pipe line puts on packer, cause packer to set midway or packer impaired;
2, adopt double sealing structure, sealing reliability is high, good sealing effect and permanent;
3, after connection, can carry out pressure testing, guarantee the safety of going into the well;
4, strong adaptability, can be used for various hole conditions.
Accompanying drawing explanation
Fig. 1 is the structure chart of hydraulic control protector of the present utility model.
In figure: axis is crossed opening 1, top connection 2, central tube 3, seal 4, piston 5, shear pin 6, annular space cover 7, overcoat 8, lower contact 9, tail pipe 10.
The specific embodiment
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides the use of reference with explanation, is not used for the utility model to be limited.
As shown in Figure 1; hydraulic control protector; comprise top connection 2, lower contact 9, central tube 3; the upper and lower two ends of described central tube connect respectively top connection and lower contact; also comprise overcoat 8; described overcoat is enclosed within central tube outside; and overcoat upper and lower end is connected on upper and lower joint; between described overcoat and central tube, form annular space hydraulic control passage; in described hydraulic control passage, protective device is set; described protective device constant-pressure type blocks hydraulic control passage, offers respectively the axis that is communicated to hydraulic control passage and cross opening 1 on described upper and lower joint.Described protective device comprises piston 5 and annular space cover 7, and described piston is fixed on annular space set upper side by shear pin 6, and piston forms sealing by seal and central tube, and piston forms sealing by seal and annular space cover, and annular space cover forms sealing by seal and overcoat.Described annular space cover middle wall is provided with the flowing hole that the annular space between central tube and overcoat is connected.Described lower contact below union tail 10, tail pipe is connected to lower contact inner side by engage thread.Between described overcoat and top connection, adopt seal 4 to seal, between described overcoat and lower contact, adopt seal sealing.
Inside and outside between top connection 2 and lower contact 9, be connected respectively central tube 3 and overcoat 8, piston 5 and annular space cover 7 are installed in the annular space between central tube 3 and overcoat 8 in turn, tail pipe 10 is connected in lower contact 9.Top connection 2 and lower contact 9 walls are provided with axis and cross opening.On top connection 2, lower contact 9, annular space cover 7 and piston 5, seal 4 is installed.Piston 5 is fixed by shear pin 6 and annular space cover 7.Annular space overlaps 7 middle wall and is provided with the flowing hole that the annular space between central tube 3 and overcoat 8 is connected.By protective device, effectively prevent that the hydraulic pressure of liquid controling pipe line from putting on packer, cause packer to set midway or packer impaired.
The foregoing is only preferred embodiment of the present utility model, non-in order to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (5)
1. hydraulic control protector; comprise top connection, lower contact, central tube; the upper and lower two ends of described central tube connect respectively top connection and lower contact; it is characterized in that; also comprise overcoat; described overcoat is enclosed within central tube outside; and overcoat upper and lower end is connected on upper and lower joint; between described overcoat and central tube, form annular space hydraulic control passage; in described hydraulic control passage, protective device is set; described protective device constant-pressure type blocks hydraulic control passage, offers respectively the axis that is communicated to hydraulic control passage and cross opening on described upper and lower joint.
2. hydraulic control protector according to claim 1; it is characterized in that; described protective device comprises piston and annular space cover; described piston is fixed on annular space set upper side by shear pin; piston forms sealing by seal and central tube; piston forms sealing by seal and annular space cover, and annular space cover forms sealing by seal and overcoat.
3. hydraulic control protector according to claim 2, is characterized in that, described annular space cover middle wall is provided with the flowing hole that the annular space between central tube and overcoat is connected.
4. hydraulic control protector according to claim 1, is characterized in that, described lower contact below union tail, and tail pipe is connected to lower contact inner side by engage thread.
5. hydraulic control protector according to claim 1, is characterized in that, adopts seal sealing between described overcoat and top connection, adopts seal sealing between described overcoat and lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420015636.9U CN203685106U (en) | 2014-01-11 | 2014-01-11 | Hydraulic control protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420015636.9U CN203685106U (en) | 2014-01-11 | 2014-01-11 | Hydraulic control protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685106U true CN203685106U (en) | 2014-07-02 |
Family
ID=51007025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420015636.9U Expired - Fee Related CN203685106U (en) | 2014-01-11 | 2014-01-11 | Hydraulic control protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685106U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812507A (en) * | 2015-11-30 | 2017-06-09 | 中国石油化工股份有限公司 | A well pressure control layered isolation water injection string |
| CN107916910A (en) * | 2016-10-10 | 2018-04-17 | 中国石油化工股份有限公司 | Independent hydraulic control packer pressure valve |
| CN110005365A (en) * | 2019-01-22 | 2019-07-12 | 中国海洋石油集团有限公司 | A kind of controlled hydraulic, which is set, passes through packer |
-
2014
- 2014-01-11 CN CN201420015636.9U patent/CN203685106U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812507A (en) * | 2015-11-30 | 2017-06-09 | 中国石油化工股份有限公司 | A well pressure control layered isolation water injection string |
| CN106812507B (en) * | 2015-11-30 | 2018-12-28 | 中国石油化工股份有限公司 | Well pressure control separate-layer packing water injection string |
| CN107916910A (en) * | 2016-10-10 | 2018-04-17 | 中国石油化工股份有限公司 | Independent hydraulic control packer pressure valve |
| CN110005365A (en) * | 2019-01-22 | 2019-07-12 | 中国海洋石油集团有限公司 | A kind of controlled hydraulic, which is set, passes through packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20160111 |